Preparation, characterization and millimetre wave attenuation performance of carbon fibers coated with nickel-wolfram-phosphorus and nickel-cobalt-wolfram- phosphorus. (April 2016)

• Record Type: Journal Article
• Authors: Ye, Mingquan; Li, Zhitao; Wang, Chen; Han, Aijun
• Is Part Of: Materials research bulletin. Volume 76(2016)
• Page Start: 247
• Page End: 255
• Publication Date: 2016-04
• Subjects: A. Composite -- A. Magnetic materials -- C. X-ray diffraction -- C. Electron microscopy -- D. Surface properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2015.12.032
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: SEM, XRD, EDS and MMW attenuation performances of alloys coated CFs were studied. Resistivity and P content in alloys were main factors on MMW attenuation property. The weight gain of coated CFs has effects on the MMW attenuation performance. Abstract: Carbon fibers (CFs) coated with Ni–X–P ( X = W, Co–W or none) alloys were prepared by electroless plating. The morphology, crystal structure, and element composition of alloy-coated CFs were characterized by scanning electron microscopy, X-ray diffractometry, energy-dispersive spectrometry and microwave attenuation. The results showed that CFs were coated with a layer of alloy particles. P content in Ni–Co–W–P or Ni–W–P alloys was lower than that in Ni–P alloy, and coating alloy Ni–P was amorphous. After W or Co introduction, coating alloys exhibited crystal characteristics. MMW-attenuation performance analysis showed that the 3 mm wave attenuation performance of CFs/Ni–Co–W–P, CFs/Ni–W–P and CFs/Ni–P increased by 7.27 dBm, 4.88 dBm and 3.55 dBm, and the 8 mm wave attenuation effects increased by 11.61 dBm, 6.11 dBm, and 4.06 dBm respectively, compared with those of CFs. MMW-attenuation performance is attributable to the sample bulk resistivity and P content in the alloy. Moreover, an optimal weight gain value existed for the MMW-attenuation performance of alloy-coated CFs.